A principle is the expression of perfection, and as imperfect beings like us cannot practise perfection, we devise every moment limits of its compromise in practice.
It is extremely dangerous to talk about limits or borders. It is vital, instead, that we remain completely open, that we are always involved, and that we aim to contribute personally in social events.
Some of the press who speak loudly about the freedom of the press are themselves the enemies of freedom. Countless people dare not say a thing because they know it will be picked up and made a song of by the press. That limits freedom.
I'd like to be a geneticist to be honest, but there are limits to what I can do now. For my dream to come true I'd have to be 20 years old again, heading off to a blue chip university.